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Force and Motion
Question | Answer |
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Newton's First Law of Motion | An object at rest stays at rest or an object in motion until unbalanced forces act upon it. This is often referred to as Newton's law of inertia |
Inertia | The tendency of a physical object to remain still or continue moving unless force is applied |
At rest | The state of an object when it is not in motion |
Unbalanced forces | Forces on an object that cause change in the motion of the object |
Newton's Second Law of Motion | Acceleration of an object depends on the object's mass and the magnitude of the force acting upon it (F=ma). This is often referred to as Newton's law of force and acceleration |
Force | A push or a pull that can change the motion of an object |
Magnitude | The size or quantity of something |
Acceleration | The rate of change in an object's speed |
Newton's Third Law of Motion | For every action there is an equal and opposite reaction. This is often referred to as Newton's law of action-reaction |
Action | The way that something causes a change |
Reaction | Resistance or force of equal magnitude acting in the opposite direction of an action force |